vassare-jimp

En vässare om JavaFX.

Förberedelser

Installerad Java 11 (eller senare) JDK. Ett bra sätt om man har Bash är att använda https://sdkman.io/

Installera Scene Builder från https://gluonhq.com/products/scene-builder/

Valfri IDE för att skriva Java-kod.

Agenda

• JavaFX historia
• JavaFX begrepp och terminologi (Controls, Containers, Layoutmanager, properties, controllers, FXML)
• Code-A-Long: Sätt upp projektet i IntelliJ & Scene Builder
• Paus
• Code-A-Long: Paintbrush
  • git checkout step1
• Code-A-Long: Image layering

Historia

v1.0

Released December 2008

"F3 is actually a declarative Java scripting language with static typing for good IDE support and compile-time error reporting (unlike JavaScript...), type-inference, declarative syntax, and automatic data-binding with full support for 2d graphics and standard Swing components as well as declarative animation. " https://web.archive.org/web/20120106124512/http://blogs.oracle.com/chrisoliver/entry/f3

v1.1

Released February 2009

JavaFX for mobile development.

v1.2

Released June 2009

• Beta support for Linux and Solaris
• Built-in controls and layouts
• Skinnable CSS controls
• Built-in chart widgets

The acquisition of Sun Microsystems by Oracle Corporation was completed on January 27, 2010

v2.0

Released October 2011

• Inget mer scriptspråk, rena Java APIer liknande Swing.
• FXML introduceras
• Oracle går ut med att de skall släppa JavaFX som OSS

JavaFX 8

Released Marched 2014

Nu del av JRE 8.

JavaFX 11

Released September 2018

"As of JDK 11 the JavaFX modules are delivered separately from the JDK." https://github.com/javafxports/openjdk-jfx/blob/jfx-11/doc-files/release-notes-11.md

Gluon https://gluonhq.com/ blir mer och mer de som syns mest vad gäller JavaFX

JavaFX 14

Senaste

Terminologi

Nodes

Instanser av UI-element, textrutor, knappar, menuer o.s.v.

                         --------
          ------        / Nodes /
         | VBox |       --------
          ------
             |
    ------------------
    |                |
------------  -------------
| Checkbox |  | TextField |
------------  -------------

Noder är hierarkiska.

I stora drag finns det två sorters noder: Containers - som hanterar layout av sina underliggande noder (children), och UI Controls - som är mindre bitar som textfält, knappar, ikoner o.s.v.

Scene

Den mojäng som håller koll på nod-trädet (SceneGraph).

Stage

Håller koll på scenen och skapar fönstret (Window) som applikationen bor i.

Properties

En definiution av Plain Old Java Beans Properties som man inte så ofta ser i Enterprise sammanhang:

A bound property notifies listeners when its value changes. This has two implications:

The bean class includes addPropertyChangeListener() and removePropertyChangeListener() methods for managing the bean's listeners. When a bound property is changed, the bean sends a PropertyChangeEvent to its registered listeners.

https://docs.oracle.com/javase/tutorial/javabeans/writing/properties.html

Från JavaFX 2.1

This release introduces property support into JavaFX, support that is based on the proven JavaBeans model, but expanded and improved.

JavaFX properties are often used in conjunction with binding, a powerful mechanism for expressing direct relationships between variables. When objects participate in bindings, changes made to one object will automatically be reflected in another object

https://docs.oracle.com/javafx/2/binding/jfxpub-binding.htm

Vilken är en hyfsat bekväm modell för att propagera värden från UI till sin modell.